We investigate the role of education on worker productivity and firms' total factor productivity using a panel of firm-level data from China. We estimate the returns to education by calculating the marginal productivity of workers of different education levels based on estimates of the...

In the early twentieth century, the Japanese colonial government initiated an island-wide malaria eradication campaign in Taiwan, resulting in not only a rapid decline in malaria across time but also elimination of disparity across regions. Exploiting variations in malaria deaths caused by the...

We find that second-generation effects of in utero and early childhood malnutrition on the school participation of the offspring of mothers who experienced the China Great Leap Forward Famine.. The direct impact on entrance to senior high school is also negative, but smaller in magnitude than...

We estimate the effects of early childhood malaria exposure on education and health at older ages by exploiting variations in malaria exposure risk around birth that resulted from a universal malaria eradication campaign in colonial Taiwan in the early 20th century. We find that malaria exposure...

We apply censored quantile regressions to representative German register data with more than 91,000 observations in order to determine crucial factors that influence the distribution of unemployment duration in West Germany during the 1980s and 1990s. We find that the effect of some regressors...

The Box-Cox quantile regression model using the two stage method introduced by Chamberlain (1994) and Buchinsky (1995) provides an attractive extension of linear quantile regression techniques. However, a major numerical problem exists when implementing this method which has not been addressed...

The Box-Cox quantile regression model using the two stage method suggested by Chamberlain (1994) and Buchinsky (1995) provides a flexible and numerically attractive extension of linear quantile regression techniques. However, the objective function in stage two of the method may not exists. We...

This article describes how the Dark Web is usually considered the dark side of the World Wide Web. Cyber criminals usually use specialized tools, e.g. TOR, to access the hidden services inside the Dark Web anonymously. Law enforcement officers have difficulty tracing the identity of these cyber...